Despite what your bridge-jumping, shark-riding, train-hopping Uncle Beanie might tell you, scuba requires meticulous preparation and impeccable equipment. Professional divers will insist that purchasing diving gear is like securing life-support equipment for a trip to outer space. That's because we humans breathe air, not water. Thus the best and brightest scuba practitioners recommend high-quality equipment, from mask to fin. Tarpoon, established in 1942 by diver Mike Kevorkian, has the latest models in top brands like U.S. Divers, Scubapro, and Seaquest. It is also the oldest dive shop in Miami-Dade. Longevity is meaningful because ideally, you want to patronize a place that's going to be in business when your stuff needs service. Tarpoon's salespeople are also divers, so they can tell you why you need, say, a silicone mask. (Answer: Cheaper ones often dry up and crack.) Professional divers also recommend avoiding places that certify you in just a day or two. Tarpoon's beginner's course costs $225 and is conducted over two weeks in a heated pool at the Hialeah store. You need mask, snorkel, fins, and weight belt to enroll.